Improvement in ropes, cord



nitrd gister LOUIS GABRIEL YON, OF PARIS, FRANCE.'

Lette/rs Patent lNo. 91,995, dated June 29, 1869.

t mPRovr-.MENT INnoPns, conn,V am.

The Schedule referred'to in these Letters Patent and making part of the same.

To all whom it may concern: l

Be it known that I, Louis GABRIEL You, of Paris, France, have invented certain new and useful Improvements 'in Ropes,.Cords, Src.; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which-f- Figure 1 represents a side view of my improved rope.

Figure 2 is a transverse section of the same.

Similar letters of reference indicate corresponding parts.

This invention relates to'a new manner of making ropes and cables, so 'as to utilize the material to the best advantage.

Heretot'ore, ropes were made by twisting a certain number of threads of hemp,.or other material,- so as to form strands, that are laid spirally around alcore to forni the cable or ro'pe.

The successive spiral twistings of the fibres will shorten the same tosuch an extent that a length ot' six feet of fibresv will yield but four feet of twisted product, which difference is yet increased for largesized cables. r

` Part ofthe resistanceof the fibres being utilized in the successive torsions, less resistance for longitudinal strain will remain.

As, furthermore, all the fibres` are not working evenly, the outer ones being more strained than the inner, the rope is more apt to break. This can frequently be noticed by unwinding the cords of cables that were but little used.4 Numbers of broken bres and strands will be found therein.

The present construction of ropes is, therefore, defective, as it requires av greater length cf yarn,rand reduces the strength.

My process of manufacturing ropes, cords, and'cag bles is as follows: I

To make a cable of any diameter, I take a number of ropeyarns, or strings, 'a a, which I stretch evenly, disposing and placing them, without any torsion, into bundles parallel to one another.

AThis operation `is eifected either by manualv or mei Another advantage is, that I can dispense with the core, and still obtain greater strength, as all the fibres, when strained, are working together in the direction of the strain, in which there is also their greater resistance.

It', by frequent use, the outer layerlshould be worn, it will be easy to fit a new one to the same cable.

The rope-yarn bundles c may, it' desired, be separately bound together in suitable manner.`

The same lsystem may be adapted,also, to iron, brass, or other ropesvand cables,

Having thus described my invention,

VI claim as new, and desire to secure by Letters Patent- As a new article of manufacture, ropes or cables, constructed as described, of the straight inner threads a, bound together by the cuter wovenlayer ot' thread b, as herein described, for the purpose specified.

L. GABRIEL YON.

Witnesses:

C. DEMOS, A. GUION, J R., J. U. Zus'r. 

